ComfyUI Node: LG Relight

LG Relight:

The LG_Relight node is designed to enhance and manipulate the lighting of an image by simulating realistic lighting effects. This node is particularly useful for AI artists who want to adjust the lighting conditions of their digital artwork without altering the original image content. By utilizing normal maps, the node can calculate how light interacts with the surfaces in the image, allowing for the creation of dynamic lighting effects such as shadows and highlights. The LG_Relight node provides a powerful tool for artists to experiment with different lighting scenarios, enhancing the visual appeal and depth of their creations.

LG Relight Input Parameters:

image

The image parameter is the primary input for the LG_Relight node, representing the artwork or photograph you wish to relight. This parameter is crucial as it serves as the base upon which lighting effects will be applied. The image should be in a compatible format that the node can process, typically a tensor representation of the image data.

normals

The normals parameter is an image that contains normal map data, which is essential for calculating how light interacts with the surfaces in the image. Normal maps provide information about the orientation of surfaces, allowing the node to simulate realistic lighting effects. This parameter significantly impacts the accuracy and realism of the relighting process.

LG Relight Output Parameters:

IMAGE

The output of the LG_Relight node is an IMAGE, which is the relit version of the input image. This output reflects the applied lighting effects, including adjusted shadows, highlights, and color effects based on the input parameters. The resulting image offers enhanced visual depth and can be used directly in your projects or further edited as needed.

LG Relight Usage Tips:

• Experiment with different normal maps to achieve various lighting effects and enhance the realism of your images.
• Adjust the brightness and color parameters to fine-tune the mood and atmosphere of your artwork, creating dramatic or subtle lighting changes as desired.
• Use the shadow and highlight strength settings to control the intensity of these effects, ensuring they complement the overall composition of your image.

LG Relight Common Errors and Solutions:

Error: "Invalid image format"

• Explanation: This error occurs when the input image is not in a compatible format that the node can process.
• Solution: Ensure that the image is in a supported format, such as a tensor representation, and try again.

Error: "Normals map missing or incorrect"

• Explanation: This error indicates that the normals map is either not provided or is in an incorrect format, which is essential for calculating lighting effects.
• Solution: Verify that the normals map is correctly formatted and corresponds to the input image, then reapply the node.